ecreef, I would look into 1000w mh to illuminate the corals that you may want to have. If you check this site, there is a person who lives in Superior, CO who has a 5' deep tank and hates it. He has the claw, but when he was originally landscaping the tank, he had much troubles maneuvering the rocks, corals etc. In my opinion, 36" is too deep for me. I would go shorter.